| 非傍轴标量衍射理论的比较研究 |
| |
| 引用本文： | 邓小玖,王东,刘彩霞,李怀龙.非傍轴标量衍射理论的比较研究[J].合肥工业大学学报(自然科学版),2007,30(9):1212-1214. |
| |
| 作者姓名： | 邓小玖 王东 刘彩霞 李怀龙 |
| |
| 作者单位： | 合肥工业大学,理学院,安徽,合肥,230009 |
| |
| 基金项目： | 合肥工业大学科研发展基金资助项目(041003F、061001F) |
| |
| 摘 要： | 当光束束腰(或衍射孔孔径)可与波长相比拟或光束具有较大的发散角时,傍轴近似不再成立。以高斯光束的微小圆孔衍射为例,在非傍轴条件下,对衍射场的级数解、非傍轴近似解以及精确解进行了详细的数值计算和比较研究。结果表明,高斯光束经圆孔衍射的级数解、非傍轴近似解的有效性与高斯光束的束腰半径、衍射孔孔径和传播距离有关,并具有一定的互补性。
|
| 关 键 词： | 物理光学 非傍轴标量衍射理论 高斯光束 圆孔衍射 有效性 |
| 文章编号： | 1003-5060(2007)09-1212-03 |
| 修稿时间： | 2006年9月1日 |
Comparative study of non-paraxial scalar diffraction theories |
| |
| DENG Xiao-jiu,WANG Dong,LIU Cai-xia,LI Huai-long.Comparative study of non-paraxial scalar diffraction theories[J].Journal of Hefei University of Technology(Natural Science),2007,30(9):1212-1214. |
| |
| Authors: | DENG Xiao-jiu WANG Dong LIU Cai-xia LI Huai-long |
| |
| Abstract: | Considering that the paraxial approximation is no longer valid for the beams with large divergence angles and small spot size comparable with the wavelength,detailed numerical calculations of the series expansion solution,non-paraxial approximation solution and exact solution of Gaussian beams diffracted at a small circular aperture are performed and compared.It is shown that the validity of the series expansion solution and non-paraxial approximation solution depends on the waist width,aperture and propagation distance and the two kinds of solution are compensated mutually. |
| |
| Keywords: | physical optics non-paraxial scalar diffraction theory Gaussian beam circular aperture diffraction validity |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
